Open the %TEMP%\ubi\config\ubiEngineConfig.xml and set <Resizable>true</Resizable>

Plug sensor back

Ubi window will become resizable and you can resize it to any size your want and drag it to anywhere you want. Ubi will calibrate the area that the window covers.

=== For Ubi 3.2.0 and below ===

Ubi supports screen up to 120 inches diagonal. If you cannot make your screen smaller, you can consider buying a projector from here: http://www.ubi-interactive.com/hardware or try the manual calibration to calibrate part of the screen by following these steps:

Assuming you screen resolution is 1980x1080 and you would like to have the center of the screen calibrated (500x680) area as shown below.